Forming and tempering apparatus



Oct. 16, 1922-; 1,688,142

( J. GOGAN FORMING AND TEMPERING APPARATUS Filed Oct. 18, 1926 2Sheets-Sheet l Ho: n M35 Oct. 16, 1928.

J. GOGAN FORMING AND TEMPERING APPARATUS Filed Oct. 18, 1926 2Sheets-Sheet Goeluv Patented 0a. 16, 1928.

UNITED STATES PATIENT OFFICE. v

JOSEPH GOGAN, OF CLEVELAND, OHIO.

FORMING AND TEMPERING APPARATUS.

Application filed October 18,1926. Serial No. 142,233.

ing pressure than prior machines of this class so as tomake itpossible-to straighten the spring leaves edgewise and hold them against.any tendency to work while cooling.

, Other objects of the invention and the features of novelty will beapparent from the following description taken in connection with theaccompanying drawings, of which: Fig. 1 is an elevation of a machine embodying my invention, certain parts being shown in section; V

Fig. 2 is a. sectionon the line 2-2 of Fig. 3 is an enlarged section onlines 3- 3 of Figs. 1 and a; v i

Fig. 4 is a section on the line t t of Fig.3; i

' Fig, 5 isfa detail section on theline 5.5

of Eig.3;- 1 Fig. 6 is adetail section on theline ti 6 Fig; 7 is-adetail section showingthe manually operable control valve in a differ-.in Fig.1.

ent position from that in which it is shown .Referring to thedrawings,:10 indicates a; tank for a quenching or temperingfluid, this tank beingpreferably rectangular in shape and constructed of steel plates andstructural steel members. Supportsll and 2 are arranged on the bottom ofthe tank 10 and carry the columns 13 and 14, respectively. .Thesecolumns are provided with vertical slots in their opposed sides to formthe ways or guides 15. Y A form-carrying member 16 is arranged in thetank 10 with its ends slidable between the ways 15. The member 16carries one or more forms which may be of the usual solid typeor maycomprise a plurality'of adjustable keys 17 on which the spring plate isshaped, these keysbeing relatively positioned to give thedesired-curvature to the plate. Another form-carrying member 18 isarranged above the member 16 and hasits ends slidable between the ways,'15. The member 18 carries one or more'forms that are complementary tothe form or'forms carried'by the member 16, or the adjustable keys 19which are arranged directly above the keys 17 and conform to therelative arrangement of the latter. provided with horizontally extendingslots 20 to receive bolts 21 which areadapted o clamp the forms 17 inposition, the formsbeing provided with vertical slots 22 to permit thenecessary vertical adjustment of the forms, By this arrangement, theforms 17 The member16 is are adjustable vertically and horizontally tosuit the work to be treated. 1

i The member 18 is, likewise, provided with horizontal slots'23 toreceive the bolts 24 by means of which the forms 19 are secured inposition, these forms having vertical slots .25 which. provide forvertical adjustment of theforms. i

The upper portions. of the columns 13 and 14 are bored out to formcylinders 26 in.

which theplungers or pistons 27 are adapted to reciprocate. Heads 28 areboltedon the upper ends of the columns 13- and 14 and each of theseheads carries a cylinder 29 in which there is a plunger or piston 30that is the cylinders 26. The plungers or pistons 27 are connected withthe ends of the member 18 by connecting rods 34.

connected with the plungers 27, directlybelow, by a-rod-t31-which'passes through the head 28. A pipe 32 connects with thelower A manuallyoperable control valve 35 is diagrammatically shown inthe drawings as a" four-way plug valve having an operating handle 36.The valve 35 is connected with the pipes32 and133-and also with a supplypipe 37 and a discharge pipe 38. The pipe 37 connects with a supply tank39 and fluid under pressure, this fluid being preferably oil and beingsupplied to the tank 39 by a pump 40 which may be operated by an electric motor 11. A pipe 42 connects the pump 40 with. the-tank 39 and thepipe 37 communicates with the lower part of the tank, since it isdesirable to have an air chamber in the upper part of the tank'so' thatthe tank will shape.

act as an accumulator, in accordance with well knou' 'n'prac'tice. Thetank 43' serves as a sump to which'the pressure fluid is ultimatelyreturned and the pump 40 is connected with this sump by thepipe Arrangedwithin the tank are cylinders 45 having plunger-s 46,w hich areconnectedwith the member 16 for the purpose of sup porting and actuating thelatmr. A pipe- 47 connects the lower ends of the cylinders l5 together,below the plungers 465 and this pipes? is connected with the pipe 32 bya pipe-48 in which there is a. commonoheck valve 49-adapted topermit thepressure fluid 'to'flow downwardly through the pipe 48 but not upwardlyThe pipe47 also" has coirneoted therewith a pipe 5O which le to the sumpand has an ordinary spring-held relief Valve 51, which is adapted topermit the 'fluid to lie-discharged therethrouglrwhen the pressure inthe pipe 47 ex ce'ed'sg 'ai predet ei mil'nedamount, Stops 52 aresecured on the lower ends of the columns'lfi and 14 to limit thedownward inoveinentof the member'16.

' In the drawings, for conyenience, the member 16is shownat the lowerlimit of its movement andt-he member 18* atits upper limit but, when themember- 16 is at its up- 'pei' limit, the forms 17' arespa oed farenough away :l'rom the for-ms 19 to, permit the insertion and removalofthe work, 'it-"being understood that in the actualoperation of thmachine the member- 16" will? always 'be at the upper limit when theforms are-open. Assuming the member 16 is, at the upper limit of" itsmovement and" held there, by

the fluid in the cylinders 4 5,japiec e ot Work is laid on'the fo'rms 17and the' alve is-pos-itionedas showninF-ig 1L This permitsthe fluidunder pressure to-fiow fromthe pipe 37 to thepipe 33"anfldfromthe-latter into the uppere'nds'lof tlie'oylinde'rs 26-, above theplunger-s27, thereby forcing the lat? ter, and the member 18, downwardagainst thework which is thereby clamped between the forms 17 and 19"andgiven its proper The cylinders 45 are smaller, than the cylinders26sothat the forces acting on the plunger-s 27 will, exceed the upward:lorceson the plungerstfiy Themeinber- 18 will then. force the member/16downward, and the fluid in the cylinders 45 will be forced out: throughthe relieityalve 51 -and return through thepipe 00 tllGSlllTlPilii.lhenthe member 11() engages twiththe stops 52,the downwardmovement ofthe memhers: 16 and; 181Will be arrested and" the work will be submergedinfthe'quenching fluid. The members 16. and; 18 are allowed to remainin. this position until the work has suflioiently cooled. to retain:its; shape and then thepvalve' 85, is adjusted. -to v the positionshownzin E ig.17'. The fluid, under pressure, will then flow, fJlOH'LthQpipe 3'Zirito the pipe 32 and from the latter into the lower ends ot thecylinders 29, where it acts on the underside oi, the plungers 30 andcauses these to rise and thereby lift the member 18 to its upperposition; At the same time that the pressure fluid is flowing to thecylinders 29, it is: also flowing through the pipe l8 and the checkvalve 19 to the cylinders where it acts on the plungers 4:6 to lift themember 16 to its upper position. The forms 19 are thus disengaged fromthe work and the latter may be then removed from the forms 17 and a newpiece put in position. The operations just described are then repeat-ed.I

" t will be noted that, when the valve 35 is in the position shown inFig. 1-, the pipe 32 is placed into communication with the dischargepipe 38 so that the fluid may be discharged from the cylinders 29as't-he member 18 moves downward. lVhen the valve 35 is in the positionshown in Fig. 7-, the pipe 33 is in communication with the dischargepipe 38- so that the fluid may be discharged from the cylinders 26. Thecheck valve 19 preventsupward flow off the fluid. through the pipe48-and thus serves to maintain. the piessure in the cylinders 45 eventhoughtlie pipe 48 is incoinn'iunication with the discharge pipe 38-, asshown in Fig.1. Having thus desoribedmy. invention, what I- claim isliIn a machine of the class described, the combination of guidingmeans,a formsupporting member movable on said guiding means, fluid pressuremeans for moying said member in one direction, a second formsupportingmember reciprocable toward and away from the first-mentioned member andcooperating therewith to clamp the work, and fluid pressure' meansfol-actuating said second member having sufficient; power to move bothof said men'ibers in one direction and in opposition to the forceexerted on the first member by its said fluid pressure means.

2. In-a machine-of the class described, the combination of guidingmeans, a form-supporting member movable on said' guiding means, fluidpressure means for movingsaid member, in one direction, a secondformsupporting member reciprocable toward and awayfroni thefirst'mentioned member and COOPGl'itlllIlg therewith to clamp the work,fluid-pressuremeans for actuating said sec ond meii'iberhaving suhlcientpower to move both of said members inone direct-ion and. in oppositionto the force exerted on the first member by its said fluidpressuremeans, a systemof pipes"forsupplying fluidiuid'er prcssureto both ofsaid fluid pressure means and including a manually operable valve forcontrolling the how oi? fluid toboth and the discharge of-l'luid. from:one of: said fluid I pressure means, and an automatically operatingvalve for controlling the discharge of fluid from the other of'saidmeans.

3. In a machine of the class described, the

member, pipes connected with all of said cylinders, a manually operablevalve for con-- trolling the supply of fluid under pressure to all ofsaid cylinders, and an'automatically operating valve for controlling thedischarge of: fluid from the first-mentioned cylinders when said membersare forced down into the quenching fluid. a

4. In a machine of the class described, the combination of a tank forquenching fluid, a pair of upright columns provided with Ways, formcarrying members slidably arranged one above the other on said ways,means for raising the lower of said members, cylinders carried by saidcolumns,

Vplungers movable in said cylinders, connectmg rods forming an operativeconnection between said plungers and theupper of said members, and meansfor supplying fluid under pressure to said cylinders to actuate saidplungers.

In testimony whereof I affix my signature.

JOSEPH GOGAN.

